1 files changed, 44 insertions, 0 deletions
diff --git a/rust/qmk-hid-com/src/hid/mod.rs b/rust/qmk-hid-com/src/hid/mod.rs
new file mode 100644
index 0000000..b80c835
--- /dev/null
+++ b/rust/qmk-hid-com/src/hid/mod.rs
@@ -0,0 +1,44 @@
+use hidapi::{HidApi, HidDevice};
+
+fn find_device(api: &HidApi, usage_id: u16, usage_page: u16) -> anyhow::Result<HidDevice> {
+    Ok({
+        let devs = api
+            .device_list()
+            .filter(|dev| dev.usage() == usage_id && dev.usage_page() == usage_page)
+            .collect::<Vec<_>>();
+
+        assert_eq!(
+            devs.len(),
+            1,
+            "Only one device should have such a usage:usage_page value"
+        );
+
+        api.open(devs[0].vendor_id(), devs[0].product_id())?
+    })
+}
+
+pub fn monitor(api: &HidApi, usage_id: u16, usage_page: u16) -> anyhow::Result<()> {
+    let device = find_device(api, usage_id, usage_page)?;
+
+    loop {
+        // Read data from device
+        let mut buf = [0u8; 4];
+        let res = device.read(&mut buf[..]).unwrap();
+
+        let value = u32::from_le_bytes([buf[0], buf[1], buf[2], buf[3]]);
+
+        println!("Read: {:?} ({} bytes) -> {value:x}", &buf[..res], res);
+    }
+}
+pub fn send(api: &HidApi, usage_id: u16, usage_page: u16, message: u8) -> anyhow::Result<()> {
+    let device = find_device(api, usage_id, usage_page)?;
+
+    // Write data to device
+    let mut buf = [0u8; 33];
+    buf[1] = message;
+
+    let res = device.write(&buf)?;
+    println!("Wrote: {:#?} byte(s)", res);
+
+    Ok(())
+}